742506 has 16 divisors (see below), whose sum is σ = 1517184. Its totient is φ = 242144.

The previous prime is 742499. The next prime is 742507. The reversal of 742506 is 605247.

It is a happy number.

742506 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a Curzon number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (742507) by changing a digit.

742506 is an untouchable number, because it is not equal to the sum of proper divisors of any number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 1035 + ... + 1598.

It is an arithmetic number, because the mean of its divisors is an integer number (94824).

742506 is a Friedman number, since it can be written as ((7+6)^5-40)*2, using all its digits and the basic arithmetic operations.

2⁷⁴²⁵⁰⁶ is an apocalyptic number.

742506 is an abundant number, since it is smaller than the sum of its proper divisors (774678).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

742506 is a wasteful number, since it uses less digits than its factorization.

742506 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2685.

The product of its (nonzero) digits is 1680, while the sum is 24.

The square root of 742506 is about 861.6878785268. The cubic root of 742506 is about 90.5524049629.

The spelling of 742506 in words is "seven hundred forty-two thousand, five hundred six".